Draft-rigging backstop



Feb. 2o, 11523.

D. s'. BARROWS DRAFT RIGGING BAGKSTOP Filed Dec. so

Patented Feb. 20, 1923.

UNITED STATES PATENT OFFICE.

DONALD S. BARROWS, F ROCHESTER, NEW YORK, ASSIGNOR TO THE T. H. SYMING- TON COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

DRAFT-RIGGIN G BACKSTOP.

Application iled December 30, 1921.

To all whom t may concern:

Be it known that I, DONALD S.- Bannows,

a citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Draft- Rigging Backstops; and l do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to draft rigging backstops such as are secured between the center sills or draft sills of a railway car for the purpose of transmitting to the car underframe the buing shocks to which the draft rigging mech-anism is subjected in service.

The principal object of the invention is to provide a backstop constructed in a manner affording great strength without excessive weight, which may be reliably secured to the car sills with little labor and without diiiiculty, and in which the occurrence of shrinkage cracks and kindred manufacturing defects is minimized.

A further object of the invention is to provide a backstop construction well suited for use upon cars where the line of draft is low; and a still further object is to construct the backstop so that it may eliiciently serve as a bolster center filler for transmitting the load of the car to the center bearing, thus preventing buckling of the webs of the adjacent car sills.

Generally stated, the principal feature of the invention consists in forming a backstop with side walls which are adapted to be secured to'spaced car sills and are united at their forward ends to an end wall forming an abutment for a movable part of the draft rigging mechanism, a centrally disposed horizontally extending hollow column being united at its forward end to the said end wall and extending rearwardly therefrom, `and the said column being connected rearwardly of said end wall to the side walls by oppositely disposed longitudinally extending Webs and by a plurality of spaced transverse webs which themselves are united to the said oppositely disposed webs.

A further'feature of the invention consists in forming the backstop with side walls and with a` forward end wall forming an abutment fora movable part of the draft rig- Serial No. 525,872.

ging, and in supporting the said end wall. against bufiing shocks by means of a centrally disposedhollow column of oval cross section which is united at its forward end to said end wall. y

Another feature of the invention consists in providing a backstop with side walls adapted to be secured to spaced car sills and with al forward end wall united to said side walls and adapted tol form an abutment for a movable part of the draft rigging, a centrally disposed hollow column being united at its forward end to the end w-all and being connect-ed to the side walls by oppositely disposed horizontal webs, and a base plate being provided for the attachment vof a center bearing, the horizontal webs being connected to the base plate by a transversely extending web, and the side walls of the said column to the rear of said transverse web being extended downwardly and directly united to said base plate in spaced relation to said side walls.

Still another feature of the invention consists in providing a backstop with abase plate and a top plate spaced vertically therefrom, the said backstop being adapted to be secured to spaced car sills having inwardly projecting flanges, and the said base plate and top plate being formed on opposite sides of the longitudinalaxis of the backstop with faces 4adapted to engage and form seats for the opposed surfaces of the flanges of the car sills.

Other features of the invention, residing in particular details of construction and the relations of structural parts, will hereinafter appear.

In the drawings illustrating the invention, the scope whereof is pointed out in the claims,-

Figure 1 is a plan view of a backstop embodying the invention.

Figure 2 is a section on the line 2 2, Fig. l.

Figure 3 yis a section on the line 3 3, Fig. l, looking in the direction of the arrows and showing the adjacenty car sills in dotted lines.

Figure 4C is a view corresponding to Fig. 3 but looking in the opposite direction.

Figure 5 is a section on the line 5 5 Fig. 1.

The draft yrigging' (not shown) with which the backstop cooperates may be of any suitable form, such for example ras that illustrated in the T. H. Symington Patent No. 1,126,663, granted January 26, 1915, In this` special form of draft rigging, which is to be regarded as merely illustrative,` the bufling shocks to which the mechanism is subjected in service are communicated to the backstop by the engagement of the rear end of the draft yoke therewith'. The spaced center sillsor draft sillsvl of the car may, in respectl to some aspects of my invention7 be of any forni desired but certain details of'construction are especially suited for cooperation with ear sills having inwardly projecting flanges. and accordingly sills of that linitu're have been illustrated in the drawings.

lThe backstop is formed with longitudinally extending side walls 2 adapted to engage the inner V.faces of the neighboring sills 1,'the forward parts of `said side walls beingA preferably provided with two vertically spaced' parallel rows of openings 3 for receiving rivets Awhereby the device may be rigidly secured to the car sills, and the rear vportions of said side walls being of 1nc-reased vertical extent and preferably equal in height to the distance Abetween the flanges of the. respective sills l. The .increase in height ofthe rear portions of the side Walls 2 not only enables the rivets by which the baclstop is secured at its rear end to the car sills to be efficiently disposed for resistingthe tendency of the structure to rotate un'derlbufling impacts but, as will hereinafter appear, is alsoadvantageous in relieving the weight'of the sills l from buckling strains ydue to the load of the car. As shown in the dra-wings. the rivet openings 4 `in the rearportionsof the. side walls 2 may be efficiently arranged in` four spaced vertical rows, the greater number of said openings being disposed above the line of draft.

The forward ends of the side walls 2 are integrally united by a transversely extending vertical end wall. 5 which is adapted to form an abutment for a movable part of the draft rigging, the portions of said. side walls which are immediately adjacent the said end wall 5 being preferably convergent forwardly. as indicated at 6.

United to the end wall 5 and extending rearwardly therefrom horizontally is a centrallydisposed hollow column 'l' which is preferably open interiorly from end to end. This column is integrally connected tothe side walls 2 `between their `upper and; lower edges `by longitudinally extending horizontal webs 8 disposed on opposite sides of saidcolumn in the plane of the axis thereof. Rearwardlyvof saidend rwall 5 `the baclrstop is provided above and below the horizontal Webs 8 with a plurality of trans-` Q' l l 1,446,028

the hollow column l by extending the side wall pori: ais il. of the rear end of said column dou'nii'ardly in` spaced relation so as to join will said base plate, the opening in the under de of the column thus provided between its side ywall portions ll affording a convenient means for removing the core after the liuclrstop 1s cast. The base platey is also preferably integally united to the hollow column. '4 by a transverse vertical web l2 which also is united to the horizontallye disposed webs 8 upon opposite sides of said column. l

esired the downwardly extend ing side wall portions of the column mayl be integrally connected by a vertically extending transverse web l3 whose upper edge 1 crerahly curved to conform tothe interior of the column. Y

The top plate llland the bottoni plate l2 of the bacieetip are spaced apart and braced verticalljjln; means of a hollow tube or column lo which isi adapted tofreceive a hing bolt (not shown). is illustrated in; the drawings.` the centrally disposed colunm "l and fthe lring bolt column l5 are directly united at the rear end of said column v and 'their interiors are in open communiA cation with each other. thus cual; .w lia p op to be cast with a single core. i addi. 'o theling bolt. coluii'ni l5 the haar plate lll and top plate iflwhich are inconnect-ed to the le walls 2 of lio p. may be hraced'ina vertical direclult! tion by a centralljij (llispo. d vertical web l@l united to if'hecoluinn and to said plates ,and may also be hraeed by a plurality of transverselif' extending webs l? whichl extend lietween said plates and are integrallyv united thereto and also to the hing bolt column l5 uml the. respective side walls 2 of the cast inej. llorwardly lof the, column l5 it is profcrred to provide a. centrally disposed yver 'tical web lll which unites the top plate ll with the centrally disposed hollow column if As wellshoun in Figs. El and il. the hase plate l() and the top plate lit are formed on opposite sides of the longitudinal .axis of the bacltjcop adjacent the side walls2 thereof with inclined faces i9 which. form seatsfor the iuturned flanges of the respective sills l of thecar., thus enabling theportion of the baclrstop adjacent the lring bolt column l5 to serve as a bolster center filler which prevents the webs of the adjacent car sills from buckling under load.

What l claim is l. )i draft rigging bachstop comprising side walls adapted to be secured to spaced car sills` a forward end wall united to said side walls and adapted to form an abutment for movable part of the rdrift rigging, a centrally disposed horizontally extending hollow column united at its forward end to said end wall and extending rearwardly therefrom, longitudinally extending on opposite sides of said column conng the latter to said side walls, and a ality of transversely extending spaced is connecting said column, said side walls and said longitudinally extending webs rearwardly of said end wall.

2, .fr draft riggingbaclrstop comprising side walls adapted to be secured to spaced car sills, a forward end wall united to said side walls and adapted to form an abutment for a movable part of the draft rigging, a hollow column united at its forward end to said end wall and extending rearwardly therefrom, and webs uniting said column to said side walls, said hollow column being of oval cross section.

3. A draft rigging backstop comprising side walls adapted to be secured to spaced car sills, a forward end wall united to said side walls and adapted to form an abutment for a movable part of the draft rigging, a hollow column of oval cross section united at its forward. end to said end wall and extending rearwardly therefrom, horizontal webs extending toward the axis of said column and uniting said side walls to said column, and transversely extending spaced vertical webs uniting said column, said side vwalls and said horizontal webs.

Il. A- draft rigging backstop comprising side walls adapted to be secured to spaced car sills, a forward end wall united to said side walls and adapted to form an abutment for a movable part of the draft rigging, a centrally disposed hollow column united to and extending rearwardly from said end wall, and a base plate having a king-bolt opening therein, said column at its rear end being open on its under side and being pro-y vided with longitudinally extending side walls which are united to said base plate.

A draft rigging backstop comprising side walls adapted to be secured to spaced car sills, a forward end wall united to said side walls and adapted to form an abutment for a movable part of the draft rigging, a horizontally disposed hollow column united to and extending rearwardly from said end wall, a base plate to which the rear end of said column is united, a top plate spaced vertically from said base plate, and a vertically extending hollow column uniting sa'fl base plate and said top plate and adapted to receive a lingbolt, said columns being directly` united integrally and having their interiors in open communication.

6. A draft rigging backstop comprising side walls adapted to be secured to spaced car sills having inwardly projecting flanges, a forward end wall united to said side walls and adapted to form an abutment for a movable part of the draft rigging, means extending between and connecting said side walls intermediate their upper and lower edges, a base plate integrally united to said side walls, a top plate spaced vertically from said base plate, and means extending between and integrally uniting said base plate and said top plate, said base plate and said top plate being formed on opposite sides of the longitudinal axis of said backstop with faces adapted to engage the flanges of sad car sills.

7. A draft rigging backstop comprising side walls adapted to be secured to spaced car sills having inwardly projecting flanges,

a forward end wall united to said side walls and adapted to form an abutment for a movable part of the draft rigging, a base plate located rearwardly of said end wall and integrally united to said side walls, and a top plate. spaced vertically from said base plate and integrally united to said side walls, said base plate and said top plate being provided on opposite sides of the longitudinal axis of the backstop with faces adapted to engage the flanges of said car sills.

8. A draft rigging backstop comprising side walls adapted to be secured to spaced car sills, a forward end wall united to said side walls and adapted to form an abutment for a movable part of the draft rigging,y a centrally disposed hollow column united at its forward end to said end wall and extend- 4for a movable part of the draft rigging, and

a hollow column of oval cross section united at its forward end to said end wall, and extending rearwardly therefrom between said side walls, the major axis of said oval being vertical.

In testimony whereof I afiix my signature.

DONALD s Baanows. 

